diff options
| author | Gwenole Beauchesne <gwenole.beauchesne@intel.com> | 2013-08-23 16:25:39 +0200 |
|---|---|---|
| committer | Gwenole Beauchesne <gwenole.beauchesne@intel.com> | 2013-08-23 19:00:37 +0200 |
| commit | dd6a0d87ffacb35c74abdf1019b88dbf6760b88b (patch) | |
| tree | 61bc3bd1c906fd31105a36eeb65963255a3b0d58 /tests/image.c | |
| parent | 73323ba76ad697939b0afe2cae53d1e5959eb36e (diff) | |
tests: image: fix conversion from RGB to YUV.
Fix RGB to YUV conversion to preserve full data range.
Diffstat (limited to 'tests/image.c')
| -rw-r--r-- | tests/image.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tests/image.c b/tests/image.c index 3abcaf82..361874cf 100644 --- a/tests/image.c +++ b/tests/image.c @@ -276,9 +276,9 @@ static inline guint32 argb2yuv(guint32 color) const gint32 g = (color >> 8) & 0xff; const gint32 b = (color ) & 0xff; - const guint32 y = (( 263 * r + 516 * g + 100 * b) >> 10) + 16; - const guint32 u = ((-152 * r - 298 * g + 450 * b) >> 10) + 128; - const guint32 v = (( 450 * r - 376 * g - 73 * b) >> 10) + 128; + const guint32 y = (( 306 * r + 601 * g + 116 * b) >> 10); + const guint32 u = ((-172 * r - 339 * g + 512 * b) >> 10) + 128; + const guint32 v = (( 512 * r - 428 * g - 83 * b) >> 10) + 128; return (y << 16) | (u << 8) | v; } |